Coffee maker



FIG. 1 is a perspective view of a coffee maker showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a sectional view taken along line 8—8 of FIG. 6. 

The ornamental design for a coffee maker, as shown and described. 